Those of us who've been around the tech industry will recall that Yodlee started out as a front-end like Mint and migrated into being the back-end provider when that didn't work out.
So, it was a distinct choice on their part to go for the back end and abandon the Mint-like interface.
And they weren't alone in trying to be Mint in 1999/2000. Anyone else remember ezLogin? IIRC they had an exit of around $120m in 2000.